Machine for forming refractory molds



jmawzs. 1,443,349.

P. COOKE. MAcmNE For( FoRMlNG REFRAcToRY MoLns.

u Fugen JULY' I8. 1921.

rented `certain new an Paauwe? Jaa. 3o, i923.

l PATRICK oooknfor sr. LoUIsQMrssoURI.

MACHINE iron ronMINennrRAcToRY MoLDs.

Application filed 'Juiy is,

To all @07mm aft/may concern? 'Be' itfknown'that l, `PATRICK Uoo1n`,3acitizen of the United States, I'residing attit. Louis, inthe State ofMissouri, have ind useful Improvements-in lViachines :for FormingRefractory fractory molds may be Molds, ofwhich the following is` ayspeci fication containing a full, clear, and exact; description,reference being had to the ao-y coml'anying 4drawings, formingy a parthereof; i F

My `invention consists in the novel construction and combinationv of-partsfand in the nenT process, hereinafter particularly describedl andydistinctly claimed.`

`The object of my invention is to provide an improved `machineforforming refractorymolds in whichsteel, iron, or other ymaterial maybe cast, whereby much handwork may be done away with`,and the returnedout rapidlyA in large or vsmall numbers, as desired. i

In the drawings, v y

l isa front-elevation -of a `machine that is constructed in accordancewith my invention, and which may be'used in practicing my process.

ofthe lower end ofthe Fig. 2 is a horizontal sectionfof the-saidmachine, taken on the line 2y-2of Fig. l.

Fig. 3 is a detail view of the'lower end of .the vertical'revolublepacking-head shafty with the packing-head and the die or core, which arecarried'by said shaft, shown in section, and i F ig. 4 is a detailenlarged vertical section l y detachable flask lor container, in whichkrthel packing-.head and' diefoperate; 'the view` showing the locationof said parts at thebeginning of the process offllingthe flask orcontainer .with packed sand, clay, orother material which can be usedinimaking a mold, or in molding plasticy material. i

The numeral l designates a horizontal table or platform, upon which theask or container 2 is detachably held and supported during theV makingof'amold, or in mold*- ing; said table *being (in the present instance)`secured to and supported a distance above theflooror" ground byopposite'vertical side-frames 3, of the machine.'v Said side-frames 3aresp'aced apart at the lower ends by the'said horizontal member 1,l

andiatvtheir yupper ends bya-fhorizntalj crossfbarftgwhlch is secured'totheupperl'` kcourse may be rectangulaigor la removable base 8 that isplaced upper surfaceof the said table'l.'Vv f i A Screw`- lamps 9 yareused 1in `the. presen@ 1921. senjai Nb. 435,608.

ends' of said side-frames; said last-menf f` cloned members being" wideattheir' lower ends, to provide a sutlicient support for the i,

machine,fand enable lsame to stand alone on i said, wide lower ends f,"but said' side-frames are narrowed at a point slightly `above the saidtable l, and from'thereupwardly yto their upper ends, to lightensame,'ask well as to save vmate-rial., `The narrowed side` frames areclearly shownv in Fig. 2. *y

-Saidfliask ordetachable container l2 is preferably in cylindrical form,but ofA desired shape in cross-sectioniiy n lts function is to containthe'packed sand, clay, or other material, and to act asa ask insupporting the packed material until: the latter is ready to be removed'from v the liask. .M 1 Y To? facilitate the lremoval of said flask orcontainer' 2 vfrom the packed material within it, after a mold'orcasting hastbeen 0f any other made, I form said fflaskin detachablesec#4 tions, and detachablyconnect them by means of common perforated;clamplng-ears- 5 through the perforationsof which ordinary bolts orscrews 6 are passed.

' Said flask 2, or the sectionsthereofftin y lcase it ismade in twosemi-cylindrical sections) have a horizontal marginal iange 7at'thelowerend'thereof. which rests uponv uponthe casetto engagethelange 7 ofsaid flask, the table l1, and to securely clam'pthe'saidrem'ovable `base Sand said fiange'to the saidl table.' See Figs. v1 and2.," 1 f Said flask 2v may be madeof any desired material, and of.any-suitablediameter and length, to turn out casts or molds of anyslzeandlengthjI A verticall packing-head shaft 9aL has its upper portionmounted' @to revolve inn aligned'bearings formed in vthe 'upper i sec-1ktion l0 and the lower section 11 ofacrossh'ead l2.`A

But the said packing-headshaft 9a" is fixed 4against axial movement inits? bea-rings,

by a gear-wheel i4 which isY fixed `upon said shaft by meansof a rpin 15 `orother fasten'- ingk device, fin the space between' *the jsvavidVupper `and lower sections ofs'aid cross-head.

VFixed against" rotation: upon the i 'said packing-head :shaftffQ cat'a' point P"naar the Y die or core 21 that is mountedonsaid shfaittlhead 12 is bound bars or strips' having the openings 17 through whichthe v4sand or clay passes during thermalring or" a cast or mold, andalso havingthe augerlilre or carnfshaped diainet-rically-opposite4inclined arins or members 1 8, which press upon and pack the materialinthe `flask and make av strong and firm cast.. or sand-mold* when beneathy said packinghead7 saidhead is rotated in the direction oi thear1'ow,"and moist ySandi orsother `material is fied intosthe said oaenings Said packing-.head 16 mounted uponv a rectangular ornon-circularportion 19 ot the said packing-head shalt7 to tix said head on saidshaftandto cause it to rotate when said'sliaft is revolved.l f

lAxial, or vertical movement ofl the said packing-head on saidpacking-head shatt is prevented. by i0 on the'shatt above said head andby a directly-beneath said head.l n Said die or core 2l is looselymounted upon a cylindrical extension ot said packing-head shaft 9,directlyl beneath said paching-headk .16, so that said die or` core willnot revolve in the packed sand or other material. '1

A washer 22 is mounted onsa'id packing" headishaftextension, directlylbeneath said dieor core, to support the weight theieo'hwli'en the saidshaft, packing-head, and die A or .core are graduallyinoved up!v ward,in inalringfa niol'dor4 cast.

y A cotterfpin 23ispassed through a lateraly hole `in saidv shaft at apoint below said washer 22, to preventthe latter from being forced oli'thex'end of said shaft;

lSaid lupper section 10 olf' the said cross- V to the lower section 11thereofby means of short vert-ical bindingy '24, which are attached toboth of said sections near the endshthereo'hv bylineansot pins'or bolts25, so that-said sectionsxextend parallel with each other);

andare practically one piece'. In tact,they

\ can be cast or otherwise madeina single The ends of said cross-headsectionslO and 1,1 engage vertical guidefstrips 26 which` are fastenedto the inner facesgof the said `side fraine`s- 3 by means Vor' screws orl rivets` 27,-Where`byzthe said cross-head may move `upfand downg butwill be prevented from rotating.

Another gear-wheel or pinion Q8 is located in the spacebetweenthe upperand lower sections (it said cross-headlZ and its teeth are always inmesh' with the' 'teeth' o'ly' said.

lfirst:mentioned gearf'whee'l 14:,v but?y said ,Qear-Wheelor pinion 28has a non-circular 'haefaiffiis tenter, throueh'vhh loosely passesa'fvertical clrive"'shaft'-29.T the greater part l'ofwthe' lengthiofwhic'h is lnon L-circular 17 of said head;

gear 34 that is carried an enlargement'or shoulder` suitablemotiveepower may and pullthat the/"i p arts carrier .j therebyhead 16and the die or core tainer 2', with the lower or core resting in contactwith theupper surin cross-section, so that as said shaft 29 re# volvesitwill drive said gear-wheel or pinion,` and at the same ter to movevertically upon said shaft,l as the cross-heanlvand packing-head, aswell as the die or core," are moved up and down. ySaid drive-shafthasjournals at its ends. and its lower journal isinounted in a bearingformed bracket 30 whichy is secured to the inner tace of one'oi saidyside-trames 8, whilethe upper journaloi" said shaft is'inounted inabracket 31 that is secured tothe saidv cross-.bar 4c by means oftastenings 32. n l p A bevel-gear 33 Vis fixed upon the upper portion otsaid vertical drive-shaft 29, and

time permit the latis engaged bv the teetl'r-'of another beveln by theadjacent end oin ali'orizontal drive-shafty 35 mounted in bearings 36carried by a bracket-BIT rest-infr upon the said cross-bar lhat theupper end of the machine.

. For'imparting` motion to the drive-shaft be used; but in thepresentcase l have shown a common belt 3S arranged to engage tight,v and loosepulleys on said shaft. l., p

The numeral 39 designates the .tight pula ley and 40 designates theloose pulley, i

. Counter-weights p' ll1, areV suspended h3* rope-,sor cables 4:2 whichrun over grooved" rollers or pulleys 4B mounted upon pintles or pinsatthe upper portionot theirtrainc oi thellrnachine7 and the ends oitsaid ropes 'or cables which are opposite those to which id weights areconnected attached to cross-head 12 by means oi common hooks.y eyes..staples. or other tasteningst so tsof the cross-head andall will bebalanced b v said weights; whereby said cross-heat and the parts carriedthereby 'ill remain at any desired vertical; adjustment on the sidetrames of the machine. until intentionally, moved up or down. i Y

A recess Meis formed in the said remow' able base 8, topermit theloweriendo'l" the said packing-head shalt-9?L Vand th'erwashei 22 andCotter-pin QStO-passbelow the plane` ot the upper surface of said base,andto Y ln practicing myv inventiomthe packingf' 21 arelowered to thelower portion'oi" the said aslz or conend' of ythe said dic 'tace ofsaid base. 8. r Y

Then a quantity oi? moist sand'or other material out oit which it isdesired to make a.' niolchl isthrown into.V the upper: end oi" saidflask or container 2, and said material will gravitate to the lbottomoit said flask, passing through the said `sand openings or passages 17in said packinghead `16, and filling the annular space between said dieor core :2l

- and the adjacent inner surface ot said flask.

as shown in Fig. 4.

Then the machine should be started, by applying the motive power in themanner previously described, and the said packing4 head 16 will berotated toward the left-hand, as indicated by the arrows in Figs. l andfl, and the sand y beneath said head will be rinly packed in said spacebetween said die or coro and said flask; but said die or core will notrotate, as it will. be held against rotation by the initial charge olimaterial.

y.fils the rotation oif the said pao-kingdiead continueaand as suppliesoli' material are added 'to the open upper end oit said 'liask, thespace between said die or core 2l and the inner walls of said flask willbe gradually and rapidly filled with firmly packed material, forming` a.mold whose interior has' the shape of the outer periphery oi: the saiddie or core1 from end to end oi' said mold, or part of the way7 asdesired.

As before stated, the said die or core does not rotate, but is draggedupwardly as fast as the Inc-ld is iilled with packed material, therebymaking a. straight and smooth pas sage upon the interior of the mold,having a cross-section corresponding;` to the crosssection of theexterior of said die or core.

For instance, if the coreor die has an eX- ternal periphery that isluted or ribbed, as herein shown, the internal walls of the mold will beof corresponding form.

In making clay sewer-pipe, or in making a mold in which steel or ironpipe is to be cast, the said core or die 2l should, of course, have asmooth cylindrical exterior.

The asks are filled and packed rapidly, and large numbers of thefinished molds may `order to support the mold while with the moltenmetal; and after the latter form secured. to and supported by lr themold yis to `be used in casting-steel,

iron, or `other metal, the mold is poured while the `flask or container2 is around it, in in contact has cooled, said iiask may be quicklyremoved by releasing the clamping-bolts, 6v

from the said clampingears 5. whereupon the packed sand may be knockedor scraped off of the casting, as usual.

l claim l A machine of the class described, compris-1 ing verticalside-frames; a horizontal plat' thelsaid vertical side-frames; ailask orcontainer de tachably secured to and supported by said horizontalvplatform; a cross-head loosely vmounted to slide axially between saidver- `tical side-frames; gear-wheels mounted to revolve between theupper and lower sec tions oli said cross-head; a vertical non-circularshaft for driving said gear-wheels; a vertical packing-head shaft havingits upper portion mounted to revolve in aligned bearing'sformed in theupper and lower sections of said cross-head; a packing-head mounted uponthe lower portion of said packingehead shaft, to pack the sand or othermaterial in f said flask or container; and a non-rotatingdie or corearranged to be dragged after said packing-head out'o the packed sand orother packed material as the mold is gradually packed.

ln testimony whereof, l have name to this speci'lioationin presence oftwo subscribing witnesses. l'

y PATRICK COOKE.

Witnesses :y

JOHN C. HIGDON, HENRY L. HIGDoN.

si gned my p'

